E300 Serious Moderate DIY

Bosch Oven E300 — Door Lock Motor Drive Fault

Bosch Oven · Error code E300

What E300 Means

The control commanded the self-clean door lock to move, but the lock motor never reached the expected end position within the allowed time window. Sister fault to E305.

Symptoms

  • Self-clean won't start
  • Lock motor audibly runs but doesn't latch
  • Door stays unlocked when it should be locked
  • E300 at start of clean cycle

Common Causes

1
Failed lock motor

Motor winding open or gearbox stripped.

2
Latch binding mechanically

Bent latch or debris in mechanism.

3
Failed lock position switch

Motor drives but switch never reports new state.

4
Failed driver on main control

Relay output to the lock motor dead.

How to Fix It

  1. Power off, then back on — try the self-clean again to rule out a one-time stall.
  2. Open the door and visually inspect the latch — it should move freely when actuated by hand (with power off).
  3. Remove the top trim and check the latch motor connector.
  4. If the motor runs but the switch never changes, replace the entire latch assembly (sold as a unit).
  5. If the motor never runs at all and voltage is present at the connector, replace the latch motor; if no voltage, replace the main control.

Parts You May Need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

Common replacement Bosch oven door latch assembly View on Amazon→

More Bosch Oven Codes

E005 E005 — Power Supply / Line Voltage Fault E011 E011 — Continuous Key Press Detected E0111 E0111 — Stuck Control Button E0511 E0511 — Cooling Fan Fault E0527 E0527 — Door Switch Fault E0531 E0531 — Convection Fan Fault

All Bosch codes → All oven codes →

Verified against manufacturer documentation: appliancerepairshymon.ca

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.